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ChemMedChem 2022, 17 (7), e202100641

DOI: 10.1002/cmdc.202100641

Jose A.; Guest D.; LeGay R.; Tizzard G.; Coles S.; Derveni M.; Wright E.; Marrison L.; Lee A.; Morris A.; Robinson M.; von Delft F.; Fearon D.; Koekemoer L.; Matviuk T.; Aimon A.; Schofield C.; MallavT.; London N.; Greenland B.; Bagley M.; Spencer J.

The pentafluorosulfanyl (-SF5) functional group is of increasing interest as a bioisostere in medicinal chemistry. A library of SF5-containing compounds, including amide, isoxazole, and oxindole derivatives, was synthesised using a range of solution-based and solventless methods, including microwave and ball-mill techniques. The library was tested against targets including human dihydroorotate dehydrogenase (HDHODH). A subsequent focused approach led to synthesis of analogues of the clinically used disease modifying anti-rheumatic drugs (DMARDs), Teriflunomide and Leflunomide, considered for potential COVID-19 use, where SF5 bioisostere deployment led to improved inhibition of HDHODH compared with the parent drugs. The results demonstrate the utility of the SF5 group in medicinal chemistry.

 

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